Syringe



sYmNeE. APPLICATIONFILED SEPT, 28, 1920.

Pandsept. 27,1921.'

y FREDERICKVW. STANTON, or CHICAGO, ILLINOIS.

SYRIN'GE.

Specification of Letters Patent.

Patented Sept. 27, 1921.

Application led September 28, 1920. Serial No. 413,276.

To all whom t may concern.'

Be it known that FREDERICK W. STANTON, citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, hasinvented certain new and useful Improvements in Syringes, of which thefollowing is a specification.

This invention relates to a syringe which is particularly constructed toconduct a jet or spray of water into a cavity of the body while thewalls of the cavity are dilated or being dilated by means of a series offingers which are spread and held open in varying degree by anadjustable screw member within reach of the user of the instrument. Theparts are also particularly related and organized to permit convenientkassembly and disassembly, and to provide a compact and easily operateddevice which can be sterilized without injury or detriment.

In the drawing accompanying this application Figure l is a sideelevation of my improved syringe with the fingers closed, and Fig. 2 isa sectional view and side elevation with the fingers partly opened orspread apart. Fig. 3 is a cross section on line 3 3, Fig. 1, showing thefulcrum member for the dilating fingers. Fig. 4 is a cross section onliner 4 4, Fig.- 2, showing the sliding yoke for the dilating lingers.

he syringe comprises a straight water delivery tube 2 having a curvedintake portion with which a rubber hose 3 may be connected, and thedischarge end of this tube is provided with a round perforated sprayingtip 4. Tube 2k is also screw threaded or provided with a fixedscrew-threaded pori tion 5 at its rear end which is engaged by a screwsleeve 6 or equivalent adjusting member adapted to be movedlongitudinally in opposite directions'on tube 2. The front end of thisscrew sleeve is adapted to bear against a slidable yoke 7 havingperforated ears 8 which project radially and forwardly therefrom and arespaced apart from tube 2 to permit a sliding collar 9 on the tube tocontact with the lateral ofsetslO on the di-l vided ends of a series ofdilating lingers 11 which are connected to ears 8 by pivot pins 12. Eachlinger is rounded in cross section and extends forwardly beyond thedischarge end of the tube and rests loosely upon the rounded extremityof a correspondingly-` situated arm on a fulcrum member 14 stationedupon tube 2 in advance of yoke 7, and a coiled spring 15 is confinedupon tube 2 between stationary member 14 and the sliding collar 9 toconstantly press the said collar toward yoke 7, and thereby maintainconstant contact of the collar with the offsets 10 on the severalfingers and also constantly press the yoke rearwardly against theadjusting screw member 6. In so doing each finger 11 is held in yieldingcontact with the fulcrum member 14 and in sliding engagement therewithalso, so that when the yoke is moved forward by the adjusting member 6,each finger will be caused to spread apart an equal distance from thetube inasmuch as the rear end portion 16 of each finger is bent andinclined toward the tube to promote this result. The degree of dilationgiven is dependent upon the extent of longitudinal movement imparted toscrew sleeve 6 by the operator, and manifestly, the screw sleeve 6 locksthe fingers as set regardless of the angle of inclination given. Theradial arms of the fulcrum member 14 furnish open spaces or exitsbetween them for the escape of the douching iiuid, and the sides of eachchanneled finger bear against the side edges of the arms of the fulcrummember and guide and hold the fingers in their movement relatively toeach other and the tube.

I hat I claim is:

1. A syringe, comprising a conducting tube having a screw-threadedportion and a fulcrum member fixed thereon, a screw sleeve engaged withsaid screw-threaded portion, a sliding yoke in thrust engagement withsaid sleeve, dilating fingers engaging said fulcrum member andpivotally-connect ed with said yoke,a sliding collar engaging saidpivoted fingers, and a spring bearing against said collar.

2. A syringe, comprising a conducting tube having a fixed fulcrum memberand a slidable yoke mounted opposite each other on said tube, separatelingers having inclined portions engaging said fulcrum member and offsetends pivotally connected with said yoke, a spring pressed sliding collarupon said tube engaging said offsets, and a longitudinally-movableoperating member for said yoke sleeved upon said tube.

3. syringe, comprising a tube having radial arms fixed thereon and ayoke with ears slidably sleeved thereon, a slidable collar and a coiledspring interposed between said arms and collar, a set of channeled armsin sliding` engagement With said radial arms having inclined portionspivotally connect-y by said radial arms, pro] said channeled arms adapeating portions on ted t0 Contact With and a screw sleeve in screwcontube adapted to operate said collar, nection with said said yoke.

Signed at Cleveland, in the county of Cuyahoga and State of Ohio, this20th day o September, 1920.

' FREDERICK W. STANTON.

